Smoke-consumer.



No. 836,449 IPAVIEIYTED NOV. 20, 1906. O. A. LEWALLEN & L. E. STETLER. SMOKE CONSUMER.

APPLICATION FILED NOV= 11, 1905.

, maire fr-"nir wenn@ l 'Qt 'i i wird@ .nl lla trito onliLliE., OF llil'xllllEAPLlS, MlNNESQTA, ASSGNORS UF ONE- ii-liltD EL UEGRGE L. MATCHAN, 0F MlNNEAPOLlS, MLNNESOTA..

MEEFGONSUEWEH.

ne. essere.

Speeication of Letters Patent.

Patented Nov. 20, 1906.

Application filed November 11,1905. Serial No. 286.825

To w//L zul/bont it may concern:

Be it known that we, @narines A. Lnwiir.- LEN, residing at Kansas City, in the county of W'yandotte, State oi Kansas, and Lewis E. Srn'rrinn, residing at iliinneapolis, in the county otlllennepin, State of Minnesota, citizens of the United States, have invented certain new and useful improvements in Smoke- Consumers; and we do hereby declare the ioliowing to be a full, clear, and exact descri tion o'l tlie invention, such as will enable ot. ers skilled in the art to which it appertains to use the ention relates to steam-generating boilers, has 'lor its object to provide anv improved for ciiectmg complete combustion ci the fuel, thereby preventmg the discharge of smolre and resulting in economy' in the use el fuel.

To the above ends 'the invention consists of the novel devices and combinations of devices hereinafter described, and defined in the claim.

The invention is illustrated in the single view of the drawing, which. is a vertical scc- `tion taken centrally and longitudinally tlirougha boiler and our improved attachment, some parts beingI broken away.

The numeral 1 indicates the 'lire-box, the numeral 2 the boiler proper', the numeral 3 the rines, the numeral a the smoke-box, and the numeral 5 the smoke-stack ot a steamgenerating plant of standard construction.

ln the application oi our invention to this boiler we employ a cylinder 6, rigidly supported by any suitable means, as by legs 7. A piston 8 works within the cylinder 6, and its stem i) works outward through one head thereof and, as shown, is connected by a rod 1() to a power-driven crank-arm 11, a portion only of which is shown.

A smoke-return flue 12 leads downward from the smoke-stack 5 and is provided with branches 12a and 12b, that open,rcspectively, into the left-hand and right-hand ends of the cylinder (i. Check-valves 13 normally close the lower extremities of the branch iiues 12a and 12L and permit the How ci air into the cyl inder, but prevent an outward ilow through ille respective branch 'llues Check-valves Ul open i'rcin the atmosphere into the branch liu-as 12 and 12b. These air-valves 111 are rciniaill'v rloscd and coen u and admit more -tion of said chamber.

or less fresh air under each suction-stroke of the piston.

Eranch outlet-'dues l5a and 15b open from the left-hand and right-hand ends, respectively, of the cylinder 6 and lead to a common return-'Hue 15, which in turn extends into the lire-box 1, above the grates thereof.

Check-valves 16 normally close the branch iiues 15L and 15b, but readilyv o en up under pressure thereon from within. t ie cylinder 6.

The return-Hue 12 is preferably formed in two sections that are connected by a closed precipitating chamber or vessel 17 (shown as rigidly secured by a bracket 17a) to the smokeboia d. The section of the liuc 12 which leads directly from the smoke-stack 5 `terminates near the bottom oi the precipitating-chamber 1.7, and the other'section of said flue 12 leads downward fromthe u per por- Between t ie separated. ends oi the two sections of the flue 12 is a screen 18, that preferably extends entirely' across the precipitating-chamber 17. The numeral 19 indicates a downwardlyclosed hand-hole in one side near the bottom of the precipitating-chamber 17.

The operation of the attachment is substantially as follows: By continuous rotation of the crank 11 the piston is reciprocated first in one direction and then in the other. Under movement of the piston i'rom the left toward the right a greater part of the escaping parts of combustion from the smoke-box 4, including,r the smoke, will be drawn through the flue 12 12a into the left-hand cnd of the cylinder 6, and any smoke, hot air, or other products ci combustion in the right-hand cnd ofthe cylinder will be forced through the due 15 15" into the tire-box directl on the burning fuel. U nder a movement oi the piston 8 from the right toward the left the products ot combustion from the smoke-box 4 may be drawn through the load-flue 12 12b into the right-hand end of the cylinder 6, while the products of combustion previously drawn into the left-hand end of the cylinder will be forced through the iiue 15 15a back into the iirc-box.- As the smoke and the products of combustion pass from the lower end of the iirst {lue-section 12 soot and other solid particles will be precipitated to the bottom of the chamber 17 and cannot of course lpass through the screen 18. Hence the smore is relieved oflthe soot, and the precipitsted'soot for producing the forced circulation of he may be collected from time to time and re- `returned pro ucts of combustion. moved at the hand'fhole 19r This soothes, a. Whatlwe claim iscommercial-value, and for that reasonelone. The combination with aboiler, of a cylin- 5 it is desirable to collect the salme. If deder-and-piston pump 6-8, and means for re- 35= sited, sufficient Water may be forced in the oiprocating the piston 8 thereof, of-a flue 12 bottom of the precipitating-chamber 17 to leadingfrom the smokeoutlet of said boiler, cover the depending end of the first fluehsecsindl having branches 121L and 12b opening tion 12, and in this case the screenA 18 might: into the opposite ends' 'of said cylinder, cheekro -be dispensed With. Under the reverserecipvalves- 13 cope'ating 4with the linner eX- 4o rocations of the piston 8 acontinuous eirom tremities of vseid fines 12a and 12b, fresh-air lation of the smoke and other products ofA check-valves 14 o enin intosaid branch combustion is kept, uplrom-the smoke=box ues 12n and 12b., renc iliues 15@- and `15bthrough the recipitatin -cha,mber 1?, cyls. leading from-the.oppositeLendsoffsaidcylin- 15 inder 6, and hack into .t e `ire-box,.endl all der and joining inge single flue. 15 that opens, 45 combustibleperticles are either com letely' into thel fire-box of said boiler, and check-.- burned,or,precipitatedintoVthevehamger16. valves 16 cooperating with' the: inner eX Thiodevice is therefore in the nei-,nre ola tremities of seid. branch flues 15?l and 15, smokeconsulfner as Well ase fuel-savingdesubstantially als. described.

2o vice. l i Iniestimony whereof We affix. oursigne,- 5c

The imgrovedldvie 0.1i ataghment; naf tures inthe presence vof/ovvo witnesses. o ycammeo ee ie to oi erso an` .an `a i kinds. In thpdrawinthe attaclirment. vis e shown as locateddirectyinrontosthe ire- 25 box ofihe boiler; but it Will of course-be un? Witnesses as to Lewllen'. derstoodmhat jnpractice it may belocated'. CHARLES 1A. vLONV'EDR,

where fczmdvmost convenient or desirable.. R.. STEUAM ADAMS.

From whety has been seidiit'willxbeunder- -Witnesses esto. Statler; f stood-that. thecylinder 5 and. iston 8 afford l. F. D. MERoHAN'r 3o adoublc-actingcylinder-an -pston pump l1 D. KLLGOREL 

